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Big Ideas: A line graph is a visual way to show two sets of related information on a coordinate grid. Titles and labels give context to the information in a line graph.
This lesson builds on students' understanding of graphing points on a coordinate grid in the context of a real world situation. In the task, students are asked to organize information from a real world scenario--a family's electric bill over 10 months. This leads them to see the utility of points on a coordinate grid for showing related information in a visual way through line graphs.
Vocabulary: context, coordinate grid, x-axis, y-axis, x-coordinate, y-coordinate, title, label, interval, line segment, line graph, visual
Special Materials:
Graph Paper (for students that choose to make a graph for the task)